WebBrowser (IE control) freezing GUI on page loading. But I do not see this in the Internet Explorer based on same engine. How?

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C#

multi-threading

web_browser

It freezing not only window with it. It freezing all application GUI.

I tried to use

Application.DoEvents();

it is almost useless.

I tried to run app with webbrowser in other process and other window, and next connect window by Win32 func SetParent. Useless.

I tried to run WebBrowser in new thread and i can't to do it (or it was useless, I forgot).

I tried to create native C++ application and use IWebBrowser2.
And even that is useless!

As this problem is solved in the Internet Explorer? Magic?!